Zentimes · ferinazumaDEV — Generative Engine Optimization
Independent GEO consultant in Madrid: I make your brand citable by AI — and I publish the proof.
Generative Engine Optimization backed by technical SEO and hands-on software development. I build the structure that lets ChatGPT, Perplexity and Google AI Overviews read your brand, understand it and cite it — and I publish every measurement, including what it does not prove. No lift figures without an error bar.
What I do
ServicesFull GEO audit
I run the prompts your buyers type into ChatGPT and Perplexity and show you where you're invisible and who gets cited instead.
GEO implementation
I ship the fixes myself — structured data, citable page structure, crawler access and clean rendering — instead of just advising.
GEO monitoring
I re-run a fixed panel of your buyers' prompts every month and report where you appear and what moved.
Web & technical SEO
I build the foundation GEO stands on: fast, well-structured websites with technical SEO and structured data done right.
Proof, not promises
Case studykenetg.com
A production Next.js brand site I build and maintain — with the AI-visibility work layered on top: structured data, citable page structure and clean crawlable rendering, so the brand is built to be cited by AI search, not just ranked on classic Google.
- 2 JSON-LD blocks on all 9 content pages
- 16 distinct Schema.org types
- 12 URLs in the sitemap, all with lastmod
- 17 of 17 endpoints answering 200
- 64.5 ms median TTFB
Measured 4 Sep 2026 — and the GEO measurement is still missing, which the case study says out loud instead of hiding.
Notes
All notes →Written in Spanish for now.
Tu empresa no sale en ChatGPT, o sale mal: son dos problemas distintos
Lo que no se mide no cuenta: cómo se prueba que el GEO funciona
Cómo hacer que ChatGPT te cite: háblale en su idioma
GEO no es SEO (pero lo necesita por debajo)
Qué es GEO y por qué tu web ya no basta con salir en Google
Con calma y con tiempo: por qué existe Zentimes
About me
Fernando
Fernando Aporta Franco
Freelance GEO consultant and software developer · Madrid
I'm an independent GEO consultant in Spain and a software developer with a cybersecurity background: I can diagnose why an AI engine ignores a site and ship the code that fixes it. I publish the method as open source, on GitHub.